This is my first limited lens after using several K/M/A-Pentax, Takumar, Zeiss lenses on K5. It gives me a shock from very first pictures. The very vivid color, 3D impression and very good blured background (bokeh). The focused object is just like from another picture put in the middle of picture. The exoteric focal length is also interesting, it is slightly narrower than normal eye view. It forces me to focus on what my eyes watches. It is very nice to use for candid or street photography. ...